import  time

# start = time.time()
#
# sum = 0
# for i in range(1,10000000):
#     sum += i
#
# print(f"sum={sum}")
#
# end = time.time()
#
# print(f"程序执行完毕，耗时：{end-start}毫秒")

for i in range(10):
    print(i)